JP3196732U - Ground heat energy collection system using inclined heat collection tubes - Google Patents
Ground heat energy collection system using inclined heat collection tubes Download PDFInfo
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- JP3196732U JP3196732U JP2015000259U JP2015000259U JP3196732U JP 3196732 U JP3196732 U JP 3196732U JP 2015000259 U JP2015000259 U JP 2015000259U JP 2015000259 U JP2015000259 U JP 2015000259U JP 3196732 U JP3196732 U JP 3196732U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
【課題】地中熱エネルギーを取り出す際の採熱効率を高め、システム全体のコストを低減する地中熱エネルギー採熱システムを提供する。【解決手段】地中に埋設した採熱管により熱媒を介して地中熱エネルギーを取出し、融雪の場合はその熱エネルギーを利用して雪を融かし、冷暖房に利用する場合はヒートポンプの熱源として利用する地中熱エネルギー採熱システムにおいて、複数の採熱管１ａ、１ｂを傾斜して埋設し、且つ、各採熱管は互いに地表に近い部分では近づき、地中深くになるにつれて互いに遠ざかるような放射状に配置する。採熱管の帯水層２に接する長さが長くなり、より効率良く熱を取り出すことができる。【選択図】図１A geothermal energy collection system that improves the efficiency of heat collection when extracting geothermal energy and reduces the cost of the entire system. SOLUTION: Underground heat energy is taken out by a heat collecting tube buried in the ground, and in the case of melting snow, the heat energy is used to melt the snow. In the underground thermal energy collecting system used as Arrange radially. The length in contact with the aquifer 2 of the heat collection tube is increased, and heat can be extracted more efficiently. [Selection] Figure 1
Description
本考案は、地中熱エネルギーを取出す際に地中に埋設する採熱管に関するものである。 The present invention relates to a heat collecting pipe embedded in the ground when the underground heat energy is taken out.
冬期間の融雪や夏冬の冷暖房に用いることを目的として、自然エネルギー源のひとつである地中熱を有効活用することが、最近のエネルギー問題を背景として徐々に普及しつつある。
地中熱を利用するには、地中に埋設した採熱管により熱媒を介して地中熱エネルギーを取出し、融雪の場合はその熱エネルギーを利用して雪を融かし、冷暖房に利用する場合はヒートポンプの熱源として利用することが一般に行われている。Effective use of geothermal heat, one of the natural energy sources, for the purpose of melting snow in winter and air conditioning in summer and winter, is gradually spreading due to recent energy problems.
In order to use the underground heat, the underground heat energy is taken out through the heat medium with the heat collecting pipe buried in the ground, and in the case of snow melting, the heat energy is used to melt the snow and use it for air conditioning. In some cases, it is generally used as a heat source of a heat pump.
昨今地中熱の利用は、大型の公共施設などでは徐々に広まってはいるものの、戸建て住宅用としてはあまり普及していない。その理由は、性能面とコスト面において投資額に見合うほどの効果が発揮されていないことに起因する。従って、システム全体の効率をいかに上げるか、さらには、それをいかに低コストで提供するかが課題となっている。 Recently, the use of geothermal heat is gradually spreading in large public facilities, but it is not so popular for detached houses. The reason for this is that the performance and cost are not effective enough to meet the investment amount. Therefore, how to increase the efficiency of the entire system and how to provide it at a low cost are issues.
戸建て住宅のような小規模で、しかも廉価に地中熱を有効利用するためには、地中の層の一部を形成する帯水層に含まれる地下水の熱エネルギーを主体に取り出して利用するのがもっとも効果的である。その理由は、水が持つ熱容量のほうが土や砂の層のそれよりも大きいこと、さらには、地下水には微速ではあるが流れがあり、同じ箇所で採熱しても新しいエネルギーの供給が期待できるからである。帯水層は一般的には比較的地中の浅い部分にも存在し、その一部は井戸水として昔から利用されている。 In order to effectively use geothermal heat at a small scale such as a detached house and at low cost, the thermal energy of groundwater contained in the aquifer that forms part of the underground layer is mainly extracted and used. Is the most effective. The reason is that the heat capacity of the water is larger than that of the soil and sand layers. Furthermore, although there is a flow in the groundwater at a slow speed, it can be expected to supply new energy even if heat is collected at the same location. Because. Aquifers generally exist in relatively shallow areas, and some of them have been used as well water since ancient times.
小規模な地下熱採熱システムにおいては、比較的浅い地層に存在する帯水層を有効活用するために、採熱管１本を地中深く埋設するよりも、必要とする熱量に見合った複数の採熱管を埋設するほうが採熱効率は向上する。その場合、採熱管は、互いに熱干渉を受けないようにある程度の間隔をおいて点在させる必要がある。 In a small-scale underground heat collection system, in order to effectively utilize an aquifer that exists in a relatively shallow formation, a plurality of heat collection pipes that match the required amount of heat are used rather than burying one collection pipe deep underground. The heat collection efficiency is improved by burying the heat collection tube. In that case, the heat collecting tubes need to be interspersed at a certain interval so as not to receive thermal interference with each other.
本考案は、複数の採熱管を従来から一般的に行っている垂直方向に埋設するのではなく、ある程度傾斜して埋設することとし、さらに、各採熱管は互いに地表に近い部分では近づき、地中深くになるにつれて遠ざかるような放射状に配置する形態とするものである。 In the present invention, rather than burying a plurality of heat collecting tubes in the vertical direction, which is generally performed conventionally, the heat collecting tubes are inclined to some extent, and each heat collecting tube approaches each other at a portion close to the ground surface, It is set as the form arrange | positioned radially so that it may go away as it becomes deep inside.
本考案によって採熱管１本あたりの採熱量は、傾斜させることで従来の垂直の場合よりも帯水層に接する長さが長くなり、より効率良く熱を取り出すことができる。 According to the present invention, the amount of heat collected per one heat collecting tube is inclined so that the length in contact with the aquifer becomes longer than in the conventional vertical case, and heat can be extracted more efficiently.
さらに、従来の工法では、採熱管内に熱媒を循環させる際に、各採熱管どうしの熱干渉を避けるために必要な距離があるため、それらを繋ぐ連結管が長くなり、地中から取り出した熱エネルギーが地表部分で奪われて採熱効率を落とす欠点があった。本考案では、各採熱管を傾斜させてそれぞれ放射状に配置することで、地表部分では各採熱管は接近し、それらを繋ぐ連結管の配管距離が短くなるため熱を奪われることが少なくなり、採熱効率を向上することができる。また、各採熱管が地表部分で接近、集中するため配管工事が容易になることで工事費が低減でき、さらには、敷地の有効利用も可能となる。 Furthermore, in the conventional method, when circulating the heat medium in the heat collection pipe, there is a distance necessary to avoid thermal interference between the heat collection pipes, so that the connecting pipe connecting them becomes long and is taken out from the ground. However, there was a drawback that the heat efficiency was reduced because the heat energy was lost on the surface. In the present invention, each heat collection tube is inclined and arranged radially, so that each heat collection tube approaches on the ground surface part, and the pipe distance of the connecting tube connecting them becomes short, so heat is less deprived, Heat collection efficiency can be improved. In addition, since each heat collection pipe approaches and concentrates on the ground surface, the piping work is facilitated, so that the construction cost can be reduced and the site can be effectively used.
本考案は、地中熱を取り出すため地中に埋設する複数の採熱管を、地表に近い部分では互いに近づき、地中深くになるにつれて互いに遠ざかるように傾斜をつけて放射状に配置する。 In the present invention, a plurality of heat collecting tubes embedded in the ground for extracting ground heat are arranged radially so as to approach each other at a portion close to the ground surface and away from each other as they become deeper in the ground.
図１は本考案を融雪に応用し、採熱管を４本とした実施例の断面図である。採熱管１ａ、１ｂ、１ｃ、１ｄは、互いに地表に近い部分では近づき、地中深くなるにつれて互いに遠くなるような放射状に傾斜して配置し、帯水層２を通過して地中に埋設する。融雪槽３は底の部分に採熱管１ａ、１ｂ、１ｃ、１ｄの上部が位置するように設置し、さらに熱交換器４を設ける。採熱管１ａ、１ｂ、１ｃ、１ｄ、熱交換器４（本図では２個）、および、融雪槽３の上部に設けた循環ポンプ５をそれぞれ連結管６で直列に連結して閉回路を構成し、循環ポンプ５を起動して熱媒（図示せず）を循環させる。融雪槽３の内部には予め水７を入れておき、熱交換器４からの熱を受けて水７は昇温する。雪８を融雪槽３内に適量投入すれば、水７によって雪８は次第に融けていく。 FIG. 1 is a cross-sectional view of an embodiment in which the present invention is applied to snow melting and four heat collecting tubes are used. The heat collecting tubes 1a, 1b, 1c, and 1d are arranged so as to approach each other close to the surface of the earth and radially incline so as to become farther from each other as they become deeper in the ground, and are buried in the ground through the aquifer 2. . The snow melting tank 3 is installed so that the upper portions of the heat collecting tubes 1a, 1b, 1c, and 1d are located at the bottom portion, and a heat exchanger 4 is further provided. The heat collecting tubes 1a, 1b, 1c, 1d, the heat exchanger 4 (two in this figure), and the circulation pump 5 provided on the upper part of the snow melting tank 3 are connected in series by a connecting tube 6 to form a closed circuit. Then, the circulation pump 5 is activated to circulate a heat medium (not shown). Water 7 is put in the snow melting tank 3 in advance, and the temperature of the water 7 is raised by receiving heat from the heat exchanger 4. If an appropriate amount of snow 8 is put into the snow melting tank 3, the snow 8 is gradually melted by the water 7.
図３は融雪に応用した従来の実施例である。従来方式では、採熱管１ｅ、１ｆは垂直に埋設されているため、高い熱エネルギーを持つ帯水層２に接触する採熱管１ｅ、１ｆの長さが、本案の図１で示す傾斜して埋設した採熱管１ａ、１ｂ、１ｃ、１ｄよりも短いので、採熱効率は本案のほうがよい。また、採熱管１ｅ、１ｆは互いに接近すると採熱効率が落ちるので間隔を空けなければならず、その結果、連結管６の距離が本案よりも全体に長くなるため、熱媒（図示せず）循環時に地表で熱がより多く奪われることになり、全体の効率は本案のほうがよい。 FIG. 3 shows a conventional embodiment applied to snow melting. In the conventional method, since the heat collecting tubes 1e and 1f are buried vertically, the lengths of the heat collecting tubes 1e and 1f contacting the aquifer 2 having high thermal energy are inclined and buried as shown in FIG. Since the heat collection tubes 1a, 1b, 1c, and 1d are shorter, the heat collection efficiency is better in the present scheme. Further, since the heat collection efficiency decreases when the heat collection tubes 1e and 1f come close to each other, the intervals must be set apart. As a result, the distance of the connecting tube 6 becomes longer as a whole than the present case, so that the heat medium (not shown) is circulated. Sometimes more heat is taken away on the surface, and the overall efficiency is better with this proposal.
本考案は地中熱を取り出し、それをエネルギー源として冬期間の融雪や、ヒートポンプを設けて夏冬の冷暖房を行う場合などに利用される。 The present invention is used for extracting ground heat and using it as an energy source for melting snow in the winter period and for air conditioning in summer and winter by installing a heat pump.
１ａ 採熱管
１ｂ 採熱管
１ｃ 採熱管
１ｄ 採熱管
１ｅ 採熱管
１ｆ 採熱管
２ 帯水層
３ 融雪槽
４ 熱交換器
５ 循環ポンプ
６ 連結管
７ 水
８ 雪1a Heat collection tube 1b Heat collection tube 1c Heat collection tube 1d Heat collection tube 1e Heat collection tube 1f Heat collection tube 2 Aquifer 3 Snow melting tank 4 Heat exchanger 5 Circulation pump 6 Connection tube 7 Water 8 Snow
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230895A (en) * | 2019-06-21 | 2019-09-13 | 河南理工大学 | Buried hiding GEOTHERMAL WATER the same well and layer takes out filling heat-source Cycles and utilizes system and working method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230895A (en) * | 2019-06-21 | 2019-09-13 | 河南理工大学 | Buried hiding GEOTHERMAL WATER the same well and layer takes out filling heat-source Cycles and utilizes system and working method |
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